1 #!/bin/sh 2 # Print a version string. 3 scriptversion=2012-03-18.17; # UTC 4 5 # Copyright (C) 2007-2012 Free Software Foundation, Inc. 6 # 7 # This program is free software: you can redistribute it and/or modify 8 # it under the terms of the GNU General Public License as published by 9 # the Free Software Foundation; either version 3 of the License, or 10 # (at your option) any later version. 11 # 12 # This program is distributed in the hope that it will be useful, 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 # GNU General Public License for more details. 16 # 17 # You should have received a copy of the GNU General Public License 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. 19 20 # This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. 21 # It may be run two ways: 22 # - from a git repository in which the "git describe" command below 23 # produces useful output (thus requiring at least one signed tag) 24 # - from a non-git-repo directory containing a .tarball-version file, which 25 # presumes this script is invoked like "./git-version-gen .tarball-version". 26 27 # In order to use intra-version strings in your project, you will need two 28 # separate generated version string files: 29 # 30 # .tarball-version - present only in a distribution tarball, and not in 31 # a checked-out repository. Created with contents that were learned at 32 # the last time autoconf was run, and used by git-version-gen. Must not 33 # be present in either $(srcdir) or $(builddir) for git-version-gen to 34 # give accurate answers during normal development with a checked out tree, 35 # but must be present in a tarball when there is no version control system. 36 # Therefore, it cannot be used in any dependencies. GNUmakefile has 37 # hooks to force a reconfigure at distribution time to get the value 38 # correct, without penalizing normal development with extra reconfigures. 39 # 40 # .version - present in a checked-out repository and in a distribution 41 # tarball. Usable in dependencies, particularly for files that don't 42 # want to depend on config.h but do want to track version changes. 43 # Delete this file prior to any autoconf run where you want to rebuild 44 # files to pick up a version string change; and leave it stale to 45 # minimize rebuild time after unrelated changes to configure sources. 46 # 47 # As with any generated file in a VC'd directory, you should add 48 # /.version to .gitignore, so that you don't accidentally commit it. 49 # .tarball-version is never generated in a VC'd directory, so needn't 50 # be listed there. 51 # 52 # Use the following line in your configure.ac, so that $(VERSION) will 53 # automatically be up-to-date each time configure is run (and note that 54 # since configure.ac no longer includes a version string, Makefile rules 55 # should not depend on configure.ac for version updates). 56 # 57 # AC_INIT([GNU project], 58 # m4_esyscmd([build-aux/git-version-gen .tarball-version]), 59 # [bug-project@example]) 60 # 61 # Then use the following lines in your Makefile.am, so that .version 62 # will be present for dependencies, and so that .version and 63 # .tarball-version will exist in distribution tarballs. 64 # 65 # EXTRA_DIST = $(top_srcdir)/.version 66 # BUILT_SOURCES = $(top_srcdir)/.version 67 # $(top_srcdir)/.version: 68 # echo $(VERSION) > $@-t && mv $@-t $@ 69 # dist-hook: 70 # echo $(VERSION) > $(distdir)/.tarball-version 71 72 73 me=$0 74 75 version="git-version-gen $scriptversion 76 77 Copyright 2011 Free Software Foundation, Inc. 78 There is NO warranty. You may redistribute this software 79 under the terms of the GNU General Public License. 80 For more information about these matters, see the files named COPYING." 81 82 usage="\ 83 Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT] 84 Print a version string. 85 86 Options: 87 88 --prefix prefix of git tags (default 'v') 89 90 --help display this help and exit 91 --version output version information and exit 92 93 Running without arguments will suffice in most cases." 94 95 prefix=v 96 97 while test $# -gt 0; do 98 case $1 in 99 --help) echo "$usage"; exit 0;; 100 --version) echo "$version"; exit 0;; 101 --prefix) shift; prefix="$1";; 102 -*) 103 echo "$0: Unknown option '$1'." >&2 104 echo "$0: Try '--help' for more information." >&2 105 exit 1;; 106 *) 107 if test -z "$tarball_version_file"; then 108 tarball_version_file="$1" 109 elif test -z "$tag_sed_script"; then 110 tag_sed_script="$1" 111 else 112 echo "$0: extra non-option argument '$1'." >&2 113 exit 1 114 fi;; 115 esac 116 shift 117 done 118 119 if test -z "$tarball_version_file"; then 120 echo "$usage" 121 exit 1 122 fi 123 124 tag_sed_script="${tag_sed_script:-s/x/x/}" 125 126 nl=' 127 ' 128 129 # Avoid meddling by environment variable of the same name. 130 v= 131 v_from_git= 132 133 # First see if there is a tarball-only version file. 134 # then try "git describe", then default. 135 if test -f $tarball_version_file 136 then 137 v=`cat $tarball_version_file` || v= 138 case $v in 139 *$nl*) v= ;; # reject multi-line output 140 [0-9]*) ;; 141 *) v= ;; 142 esac 143 test -z "$v" \ 144 && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2 145 fi 146 147 if test -n "$v" 148 then 149 : # use $v 150 # Otherwise, if there is at least one git commit involving the working 151 # directory, and "git describe" output looks sensible, use that to 152 # derive a version string. 153 elif test "`git log -1 --pretty=format:x . 2>&1`" = x \ 154 && v=`git describe --abbrev=4 --match="$prefix*" HEAD 2>/dev/null \ 155 || git describe --abbrev=4 HEAD 2>/dev/null` \ 156 && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \ 157 && case $v in 158 $prefix[0-9]*) ;; 159 *) (exit 1) ;; 160 esac 161 then 162 # Is this a new git that lists number of commits since the last 163 # tag or the previous older version that did not? 164 # Newer: v6.10-77-g0f8faeb 165 # Older: v6.10-g0f8faeb 166 case $v in 167 *-*-*) : git describe is okay three part flavor ;; 168 *-*) 169 : git describe is older two part flavor 170 # Recreate the number of commits and rewrite such that the 171 # result is the same as if we were using the newer version 172 # of git describe. 173 vtag=`echo "$v" | sed 's/-.*//'` 174 commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \ 175 || { commit_list=failed; 176 echo "$0: WARNING: git rev-list failed" 1>&2; } 177 numcommits=`echo "$commit_list" | wc -l` 178 v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; 179 test "$commit_list" = failed && v=UNKNOWN 180 ;; 181 esac 182 183 # Change the first '-' to a '.', so version-comparing tools work properly. 184 # Remove the "g" in git describe's output string, to save a byte. 185 v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; 186 v_from_git=1 187 else 188 v=UNKNOWN 189 fi 190 191 v=`echo "$v" |sed "s/^$prefix//"` 192 193 # Test whether to append the "-dirty" suffix only if the version 194 # string we're using came from git. I.e., skip the test if it's "UNKNOWN" 195 # or if it came from .tarball-version. 196 if test -n "$v_from_git"; then 197 # Don't declare a version "dirty" merely because a time stamp has changed. 198 git update-index --refresh > /dev/null 2>&1 199 200 dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty= 201 case "$dirty" in 202 '') ;; 203 *) # Append the suffix only if there isn't one already. 204 case $v in 205 *-dirty) ;; 206 *) v="$v-dirty" ;; 207 esac ;; 208 esac 209 fi 210 211 # Omit the trailing newline, so that m4_esyscmd can use the result directly. 212 echo "$v" | tr -d "$nl" 213 214 # Local variables: 215 # eval: (add-hook 'write-file-hooks 'time-stamp) 216 # time-stamp-start: "scriptversion=" 217 # time-stamp-format: "%:y-%02m-%02d.%02H" 218 # time-stamp-time-zone: "UTC" 219 # time-stamp-end: "; # UTC" 220 # End: 221
